<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
</body>
</html>
<script>
    let urlStr = "http://item.taobo.com/item.html?a=1&b=2&c=&d=xxx&e";
    let json = {};
    urlStr = urlStr.split("?")[1];
    urlStr = urlStr.split("&");
    for(let i of urlStr){
        urlStr = i.split("=");
        json[urlStr[0]] = urlStr[1];
    }
    console.log(json);

</script>